6fd954f19c
* plugin/kubernetes: axfr Hook up dynamic SOA serial by setting ResourceEventHandlerFuncs in dnsController. Add prototype of returns msg.Services via the Transfer function. Leave expanding this to RRs out of scope for a bit. * plugin/kubernetes: axfr Respond to AXFR queries * Fixing race condition * Fixing instantiation of dnstest writer * Updates from review
447 lines
12 KiB
Go
447 lines
12 KiB
Go
package kubernetes
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import (
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"testing"
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"time"
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"github.com/coredns/coredns/plugin/pkg/dnstest"
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"github.com/coredns/coredns/plugin/test"
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"github.com/miekg/dns"
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"golang.org/x/net/context"
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api "k8s.io/api/core/v1"
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meta "k8s.io/apimachinery/pkg/apis/meta/v1"
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)
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var dnsTestCases = []test.Case{
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// A Service
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{
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Qname: "svc1.testns.svc.cluster.local.", Qtype: dns.TypeA,
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Rcode: dns.RcodeSuccess,
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Answer: []dns.RR{
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test.A("svc1.testns.svc.cluster.local. 5 IN A 10.0.0.1"),
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},
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},
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// A Service (wildcard)
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{
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Qname: "svc1.*.svc.cluster.local.", Qtype: dns.TypeA,
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Rcode: dns.RcodeSuccess,
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Answer: []dns.RR{
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test.A("svc1.*.svc.cluster.local. 5 IN A 10.0.0.1"),
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},
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},
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{
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Qname: "svc1.testns.svc.cluster.local.", Qtype: dns.TypeSRV,
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Rcode: dns.RcodeSuccess,
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Answer: []dns.RR{test.SRV("svc1.testns.svc.cluster.local. 5 IN SRV 0 100 80 svc1.testns.svc.cluster.local.")},
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Extra: []dns.RR{test.A("svc1.testns.svc.cluster.local. 5 IN A 10.0.0.1")},
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},
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{
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Qname: "svc6.testns.svc.cluster.local.", Qtype: dns.TypeSRV,
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Rcode: dns.RcodeSuccess,
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Answer: []dns.RR{test.SRV("svc6.testns.svc.cluster.local. 5 IN SRV 0 100 80 svc6.testns.svc.cluster.local.")},
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Extra: []dns.RR{test.AAAA("svc6.testns.svc.cluster.local. 5 IN AAAA 1234:abcd::1")},
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},
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// SRV Service (wildcard)
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{
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Qname: "svc1.*.svc.cluster.local.", Qtype: dns.TypeSRV,
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Rcode: dns.RcodeSuccess,
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Answer: []dns.RR{test.SRV("svc1.*.svc.cluster.local. 5 IN SRV 0 100 80 svc1.testns.svc.cluster.local.")},
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Extra: []dns.RR{test.A("svc1.testns.svc.cluster.local. 5 IN A 10.0.0.1")},
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},
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// SRV Service (wildcards)
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{
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Qname: "*.any.svc1.*.svc.cluster.local.", Qtype: dns.TypeSRV,
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Rcode: dns.RcodeSuccess,
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Answer: []dns.RR{test.SRV("*.any.svc1.*.svc.cluster.local. 5 IN SRV 0 100 80 svc1.testns.svc.cluster.local.")},
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Extra: []dns.RR{test.A("svc1.testns.svc.cluster.local. 5 IN A 10.0.0.1")},
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},
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// A Service (wildcards)
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{
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Qname: "*.any.svc1.*.svc.cluster.local.", Qtype: dns.TypeA,
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Rcode: dns.RcodeSuccess,
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Answer: []dns.RR{
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test.A("*.any.svc1.*.svc.cluster.local. 5 IN A 10.0.0.1"),
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},
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},
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// SRV Service Not udp/tcp
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{
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Qname: "*._not-udp-or-tcp.svc1.testns.svc.cluster.local.", Qtype: dns.TypeSRV,
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Rcode: dns.RcodeNameError,
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Ns: []dns.RR{
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test.SOA("cluster.local. 300 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 60"),
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},
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},
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// SRV Service
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{
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Qname: "_http._tcp.svc1.testns.svc.cluster.local.", Qtype: dns.TypeSRV,
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Rcode: dns.RcodeSuccess,
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Answer: []dns.RR{
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test.SRV("_http._tcp.svc1.testns.svc.cluster.local. 5 IN SRV 0 100 80 svc1.testns.svc.cluster.local."),
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},
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Extra: []dns.RR{
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test.A("svc1.testns.svc.cluster.local. 5 IN A 10.0.0.1"),
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},
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},
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// A Service (Headless)
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{
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Qname: "hdls1.testns.svc.cluster.local.", Qtype: dns.TypeA,
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Rcode: dns.RcodeSuccess,
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Answer: []dns.RR{
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test.A("hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.2"),
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test.A("hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.3"),
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},
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},
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// A pod ip
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{
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Qname: "172-0-0-2.hdls1.testns.svc.cluster.local.", Qtype: dns.TypeA,
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Rcode: dns.RcodeSuccess,
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Answer: []dns.RR{
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test.A("172-0-0-2.hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.2"),
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},
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},
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// A pod ip
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{
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Qname: "172-0-0-3.hdls1.testns.svc.cluster.local.", Qtype: dns.TypeA,
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Rcode: dns.RcodeSuccess,
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Answer: []dns.RR{
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test.A("172-0-0-3.hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.3"),
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},
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},
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// SRV Service (Headless)
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{
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Qname: "_http._tcp.hdls1.testns.svc.cluster.local.", Qtype: dns.TypeSRV,
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Rcode: dns.RcodeSuccess,
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Answer: []dns.RR{
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test.SRV("_http._tcp.hdls1.testns.svc.cluster.local. 5 IN SRV 0 25 80 172-0-0-2.hdls1.testns.svc.cluster.local."),
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test.SRV("_http._tcp.hdls1.testns.svc.cluster.local. 5 IN SRV 0 25 80 172-0-0-3.hdls1.testns.svc.cluster.local."),
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test.SRV("_http._tcp.hdls1.testns.svc.cluster.local. 5 IN SRV 0 25 80 5678-abcd--1.hdls1.testns.svc.cluster.local."),
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test.SRV("_http._tcp.hdls1.testns.svc.cluster.local. 5 IN SRV 0 25 80 5678-abcd--2.hdls1.testns.svc.cluster.local."),
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},
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Extra: []dns.RR{
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test.A("172-0-0-2.hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.2"),
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test.A("172-0-0-3.hdls1.testns.svc.cluster.local. 5 IN A 172.0.0.3"),
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test.AAAA("5678-abcd--1.hdls1.testns.svc.cluster.local. 5 IN AAAA 5678:abcd::1"),
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test.AAAA("5678-abcd--2.hdls1.testns.svc.cluster.local. 5 IN AAAA 5678:abcd::2"),
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},
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},
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// AAAA
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{
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Qname: "5678-abcd--2.hdls1.testns.svc.cluster.local", Qtype: dns.TypeAAAA,
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Rcode: dns.RcodeSuccess,
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Answer: []dns.RR{test.AAAA("5678-abcd--2.hdls1.testns.svc.cluster.local. 5 IN AAAA 5678:abcd::2")},
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},
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// CNAME External
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{
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Qname: "external.testns.svc.cluster.local.", Qtype: dns.TypeCNAME,
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Rcode: dns.RcodeSuccess,
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Answer: []dns.RR{
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test.CNAME("external.testns.svc.cluster.local. 5 IN CNAME ext.interwebs.test."),
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},
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},
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// AAAA Service (with an existing A record, but no AAAA record)
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{
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Qname: "svc1.testns.svc.cluster.local.", Qtype: dns.TypeAAAA,
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Rcode: dns.RcodeSuccess,
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Ns: []dns.RR{
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test.SOA("cluster.local. 300 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 60"),
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},
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},
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// AAAA Service (non-existing service)
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{
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Qname: "svc0.testns.svc.cluster.local.", Qtype: dns.TypeAAAA,
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Rcode: dns.RcodeNameError,
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Ns: []dns.RR{
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test.SOA("cluster.local. 300 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 60"),
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},
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},
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// A Service (non-existing service)
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{
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Qname: "svc0.testns.svc.cluster.local.", Qtype: dns.TypeA,
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Rcode: dns.RcodeNameError,
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Ns: []dns.RR{
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test.SOA("cluster.local. 300 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 60"),
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},
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},
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// A Service (non-existing namespace)
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{
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Qname: "svc0.svc-nons.svc.cluster.local.", Qtype: dns.TypeA,
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Rcode: dns.RcodeNameError,
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Ns: []dns.RR{
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test.SOA("cluster.local. 300 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 60"),
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},
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},
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// TXT Schema
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{
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Qname: "dns-version.cluster.local.", Qtype: dns.TypeTXT,
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Rcode: dns.RcodeSuccess,
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Answer: []dns.RR{
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test.TXT("dns-version.cluster.local 28800 IN TXT 1.0.1"),
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},
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},
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// A Service (Headless) does not exist
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{
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Qname: "bogusendpoint.hdls1.testns.svc.cluster.local.", Qtype: dns.TypeA,
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Rcode: dns.RcodeNameError,
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Ns: []dns.RR{
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test.SOA("cluster.local. 300 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 60"),
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},
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},
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// A Service does not exist
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{
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Qname: "bogusendpoint.svc0.testns.svc.cluster.local.", Qtype: dns.TypeA,
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Rcode: dns.RcodeNameError,
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Ns: []dns.RR{
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test.SOA("cluster.local. 300 IN SOA ns.dns.cluster.local. hostmaster.cluster.local. 1499347823 7200 1800 86400 60"),
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},
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},
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// AAAA Service
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{
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Qname: "svc6.testns.svc.cluster.local.", Qtype: dns.TypeAAAA,
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Rcode: dns.RcodeSuccess,
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Answer: []dns.RR{
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test.AAAA("svc6.testns.svc.cluster.local. 5 IN AAAA 1234:abcd::1"),
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},
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},
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// SRV
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{
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Qname: "_http._tcp.svc6.testns.svc.cluster.local.", Qtype: dns.TypeSRV,
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Rcode: dns.RcodeSuccess,
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Answer: []dns.RR{
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test.SRV("_http._tcp.svc6.testns.svc.cluster.local. 5 IN SRV 0 100 80 svc6.testns.svc.cluster.local."),
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},
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Extra: []dns.RR{
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test.AAAA("svc6.testns.svc.cluster.local. 5 IN AAAA 1234:abcd::1"),
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},
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},
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// AAAA Service (Headless)
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{
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Qname: "hdls1.testns.svc.cluster.local.", Qtype: dns.TypeAAAA,
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Rcode: dns.RcodeSuccess,
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Answer: []dns.RR{
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test.AAAA("hdls1.testns.svc.cluster.local. 5 IN AAAA 5678:abcd::1"),
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test.AAAA("hdls1.testns.svc.cluster.local. 5 IN AAAA 5678:abcd::2"),
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},
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},
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// AAAA Endpoint
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{
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Qname: "5678-abcd--1.hdls1.testns.svc.cluster.local.", Qtype: dns.TypeAAAA,
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Rcode: dns.RcodeSuccess,
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Answer: []dns.RR{
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test.AAAA("5678-abcd--1.hdls1.testns.svc.cluster.local. 5 IN AAAA 5678:abcd::1"),
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},
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},
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}
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func TestServeDNS(t *testing.T) {
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k := New([]string{"cluster.local."})
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k.APIConn = &APIConnServeTest{}
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k.Next = test.NextHandler(dns.RcodeSuccess, nil)
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ctx := context.TODO()
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for i, tc := range dnsTestCases {
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r := tc.Msg()
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w := dnstest.NewRecorder(&test.ResponseWriter{})
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_, err := k.ServeDNS(ctx, w, r)
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if err != tc.Error {
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t.Errorf("Test %d expected no error, got %v", i, err)
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return
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}
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if tc.Error != nil {
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continue
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}
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resp := w.Msg
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if resp == nil {
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t.Fatalf("Test %d, got nil message and no error for %q", i, r.Question[0].Name)
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}
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// Before sorting, make sure that CNAMES do not appear after their target records
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test.CNAMEOrder(t, resp)
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test.SortAndCheck(t, resp, tc)
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}
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}
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type APIConnServeTest struct{}
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func (APIConnServeTest) HasSynced() bool { return true }
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func (APIConnServeTest) Run() { return }
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func (APIConnServeTest) Stop() error { return nil }
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func (APIConnServeTest) EpIndexReverse(string) []*api.Endpoints { return nil }
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func (APIConnServeTest) SvcIndexReverse(string) []*api.Service { return nil }
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func (APIConnServeTest) Modified() int64 { return time.Now().Unix() }
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func (APIConnServeTest) PodIndex(string) []*api.Pod {
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a := []*api.Pod{{
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ObjectMeta: meta.ObjectMeta{
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Namespace: "podns",
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},
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Status: api.PodStatus{
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PodIP: "10.240.0.1", // Remote IP set in test.ResponseWriter
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},
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}}
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return a
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}
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var svcIndex = map[string][]*api.Service{
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"svc1.testns": {{
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ObjectMeta: meta.ObjectMeta{
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Name: "svc1",
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Namespace: "testns",
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},
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Spec: api.ServiceSpec{
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Type: api.ServiceTypeClusterIP,
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ClusterIP: "10.0.0.1",
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Ports: []api.ServicePort{{
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Name: "http",
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Protocol: "tcp",
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Port: 80,
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}},
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},
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}},
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"svc6.testns": {{
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ObjectMeta: meta.ObjectMeta{
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Name: "svc6",
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Namespace: "testns",
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},
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Spec: api.ServiceSpec{
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Type: api.ServiceTypeClusterIP,
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ClusterIP: "1234:abcd::1",
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Ports: []api.ServicePort{{
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Name: "http",
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Protocol: "tcp",
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Port: 80,
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}},
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},
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}},
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"hdls1.testns": {{
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ObjectMeta: meta.ObjectMeta{
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Name: "hdls1",
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Namespace: "testns",
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},
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Spec: api.ServiceSpec{
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Type: api.ServiceTypeClusterIP,
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ClusterIP: api.ClusterIPNone,
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},
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}},
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"external.testns": {{
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ObjectMeta: meta.ObjectMeta{
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Name: "external",
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Namespace: "testns",
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},
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Spec: api.ServiceSpec{
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ExternalName: "ext.interwebs.test",
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Ports: []api.ServicePort{{
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Name: "http",
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Protocol: "tcp",
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Port: 80,
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}},
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Type: api.ServiceTypeExternalName,
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},
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}},
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}
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func (APIConnServeTest) SvcIndex(s string) []*api.Service {
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return svcIndex[s]
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}
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func (APIConnServeTest) ServiceList() []*api.Service {
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var svcs []*api.Service
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for _, svc := range svcIndex {
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svcs = append(svcs, svc...)
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}
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return svcs
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}
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var epsIndex = map[string][]*api.Endpoints{
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"svc1.testns": {{
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Subsets: []api.EndpointSubset{
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{
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Addresses: []api.EndpointAddress{
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{
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IP: "172.0.0.1",
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Hostname: "ep1a",
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},
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},
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Ports: []api.EndpointPort{
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{
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Port: 80,
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Protocol: "tcp",
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Name: "http",
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},
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},
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},
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},
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ObjectMeta: meta.ObjectMeta{
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Name: "svc1",
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Namespace: "testns",
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},
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}},
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"hdls1.testns": {{
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Subsets: []api.EndpointSubset{
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{
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Addresses: []api.EndpointAddress{
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{
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IP: "172.0.0.2",
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},
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{
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IP: "172.0.0.3",
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},
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{
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IP: "5678:abcd::1",
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},
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{
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IP: "5678:abcd::2",
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},
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},
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Ports: []api.EndpointPort{
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{
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Port: 80,
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Protocol: "tcp",
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Name: "http",
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},
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},
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},
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},
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ObjectMeta: meta.ObjectMeta{
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Name: "hdls1",
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Namespace: "testns",
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},
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}},
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}
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func (APIConnServeTest) EpIndex(s string) []*api.Endpoints {
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return epsIndex[s]
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}
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func (APIConnServeTest) EndpointsList() []*api.Endpoints {
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var eps []*api.Endpoints
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for _, ep := range epsIndex {
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eps = append(eps, ep...)
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}
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return eps
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}
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func (APIConnServeTest) GetNodeByName(name string) (*api.Node, error) {
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return &api.Node{
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ObjectMeta: meta.ObjectMeta{
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Name: "test.node.foo.bar",
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},
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}, nil
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}
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func (APIConnServeTest) GetNamespaceByName(name string) (*api.Namespace, error) {
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if name == "pod-nons" { // handler_pod_verified_test.go uses this for non-existent namespace.
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return &api.Namespace{}, nil
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}
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return &api.Namespace{
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ObjectMeta: meta.ObjectMeta{
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Name: name,
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},
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}, nil
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}
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